Merge pull request #1 from godaddy/avoid-pool-mutation

Removing direct reference to pool dsn and connection properties from …

src/pool-error.js

@@ -1,8 +1,10 @@
 export default class PoolError extends Error {
  constructor(pool, err) {
  super(err);
- this.pool = { ...pool };
- // don't want passwords appearing in errors
- delete this.pool.dsn.password;
+ // clone the dsn and don't expose the password
+ if (pool && pool.dsn) {
+ this.dsn = { ...pool.dsn };
+ delete this.dsn.password;
+ }
  }
 }